IHydroxypropyl methyl cellulose Umkhiqizi wefekthri womkhiqizi we-HPMC waseChina

I-Tiantai Cellulose Co.,Ltd ingumkhiqizi wefekthri ekhiqiza i-Hydroxypropyl methyl cellulose HPMC engumkhiqizi wefekthri yaseChina, enegama layo lekhwalithi ephezulu elithi QualiCell® Cellulose ethers.

Ukubheka ngokushesha i-hydroxypropyl methylcellulose HPMC

Okokuqala, ikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose?

I-HPMC ISETSHENZISWA KAKHULU EZINTO ZOKWAKHA, okokuhlanganisa, ama-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lezimboni, ibanga lokudla kanye nebanga lezemithi ngokuya ngokusetshenziswa kwayo.

Okwesibili, i-hydroxypropyl methyl cellulose ihlukaniswe yaba izinhlobo ezimbalwa, phakathi kwazo uyini umehluko?

I-HPMC ingahlukaniswa ngohlobo olusheshayo (isijobelelo sebanga "S") kanye nohlobo olushisayo oluncibilikayo, imikhiqizo esheshayo, emanzini abandayo ahlakazeke ngokushesha, anyamalale emanzini, ngalesi sikhathi uketshezi alukho i-viscosity, ngoba i-HPMC isanda kuhlakazeka emanzini. , akukho ukuhlakazeka kwangempela. Cishe (goqa) imizuzu emi-2, i-viscosity ye-liquid iyanda kancane, yenza i-viscous colloid ecacile. Imikhiqizo encibilikayo eshisayo, emanzini abandayo, ingahlakazwa ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, njengokushisa kuze kufike ezingeni lokushisa elithile (ngokusho kokushisa kwejeli lomkhiqizo), i-viscosity ibonakala kancane, kuze kube yilapho ukwakheka kwe-viscous ebonakalayo. i-colloid.

Okwesithathu, indlela yesisombululo se-hydroxypropyl methyl cellulose inani?

1. Wonke amamodeli angangezwa kundaba ngendlela yokuxuba okomile;

I-2, idinga ukungezwa ngokuqondile kwisisombululo samanzi okushisa okujwayelekile, kungcono ukusebenzisa uhlobo lokuhlakaza amanzi abandayo, emva kokungeza ngokuvamile ngemizuzu engu-10-90 ukuze ujike (ukugqugquzela, ukugqugquzela, ukugqugquzela)

3. Imodeli evamile iqala ukuhlakazwa ngokuxubha ngamanzi ashisayo, bese ichitheka ngokungeza amanzi abandayo ngemva kokugubha nokupholisa.

4. Uma i-caking and wrapping phenomenon kwenzeka lapho kuqedwa, kungenxa yokuthi ukuxuba akwanele noma imodeli evamile yengezwe ngokuqondile emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha.

5. Uma ama-bubbles ekhiqizwa lapho encibilika, angashiywa amahora angu-2-12 (isikhathi esinqunyiwe sinqunywa ukuvumelana kwesixazululo) noma asuswe nge-vacuum-extraction, i-pressurization nezinye izindlela, kanye nenani elifanele le-antifoaming ejenti. kungabuye kwengezwe.

Okwesine, kulula kangakanani futhi kulula kangakanani ukunquma ukuma noma ukuwa kwe-hydroxypropyl methyl cellulose?

I-1, ubumhlophe, ubumhlophe nakuba ingakwazi ukunquma ukuthi i-HPMC yinhle yini, futhi uma yengezwa ku-whitener yenqubo yokukhiqiza, izothinta ikhwalithi yayo, kodwa, imikhiqizo emihle ikakhulukazi ubumhlophe buhle.

2, ubucwebe: Ubucwebe be-HPMC ngokuvamile bungu-80 mesh kanye ne-100 mesh, 120 ngaphansi, okucolekile kuba ngcono kakhulu.

3, ukudlulisa ukukhanya: I-HPMC emanzini, yakha i-colloid ebonakalayo, bheka ukukhanya kwayo, ukungena okukhudlwana kokuhle, chaza i-insolubles encane ngaphakathi, igedlela lokusabela eliqondile ngamadigri ngokuvamile lihle, lizothumela igedlela elivundlile lokuphendula, kodwa ayikwazi ukuchaza ikhwalithi yokukhiqiza iketela eliqondile lingcono kunokukhiqizwa kweketela lamanga, kunezici eziningi ezinquma ikhwalithi yomkhiqizo.

I-4, isilinganiso: i-proportion enkulu, isisindo esingcono kakhulu, kunesikhulu, ngokuvamile ngenxa yokuthi okuqukethwe kwe-hydroxypropyl kuphezulu, okuqukethwe kwe-hydroxypropyl kuphezulu, khona-ke ukugcinwa kwamanzi kungcono.

Ezinhlanu, i-hydroxypropyl methyl cellulose ngenani le-putty powder?

I-HPMC ekusetshenzisweni kwangempela komthamo, ngesimo sezulu, izinga lokushisa, izinga lomlotha we-calcium wendawo, i-putty powder formula kanye nezidingo zamakhasimende zekhwalithi ehlukene, futhi kunomehluko ozungezile, ngokuvamile, phakathi kuka-4-5 kg.

Isithupha, i-hydroxypropyl methyl cellulose viscosity ingcono kakhulu?

Yiba nesithukuthezi NGEMPUVA YENGANE IJWAYELEKILE IZINKULUNGWANE EZIYI-100 KULUNGILE, ISIDINGO EMORTAR SIDE KANYE, UFUNA IZINKULUNGWANE EZIYI-150 UKUZE KUHLE UKUZISEBENZISA, futhi, indima ebaluleke kakhulu ye-HPMC ukugcina amanzi, okulandelayo ukujiya. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle, i-viscosity iphansi (7-8), kungenzeka futhi, yebo, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kuka-100,000. , i-viscosity inethonya elincane ekugcineni amanzi.

Okwesikhombisa, yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methyl cellulose?

Okuqukethwe kwe-Hydroxypropyl

Okuqukethwe kwe-methyl

i-viscosity

umlotha

Ukuncipha kwesisindo esomile

Isishiyagalombili, yiziphi izinto zokusetshenziswa eziphambili ze-hydroxypropyl methyl cellulose?

Izinto zokusetshenziswa eziyinhloko ze-HPMC: ukotini ocolisisiwe, i-chloromethane, i-propylene oxide, ezinye izinto zokusetshenziswa, amaphilisi e-alkali, i-acid toluene.

Nine, i-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, indima eyinhloko, kungakhathaliseki ukuthi amakhemikhali?

Ku-putty powder, idlala izindima ezintathu: ukuqina, ukugcinwa kwamanzi nokwakhiwa. Ukujiya, cellulose kungenziwa uqweqwe ukudlala ukumiswa, ukuze ikhambi ukulondoloza umfaniswano phezulu naphansi indima efanayo, ukugeleza anti ukulengiswa. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, ukusabela komlotha we-calcium ngaphansi kwesenzo samanzi. Ukwakhiwa: I-Cellulose inomphumela wokugcoba, ingenza i-putty powder ibe nokwakhiwa okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, idlala indima yokusiza kuphela.

IHydroxypropyl methyl cellulose i-non-ionic cellulose ether, khona-ke yini engeyona i-ionic?

Ngokuvamile, izinto ezingenasici azihlanganyeli ekuphenduleni kwamakhemikhali.

I-CMC(carboxymethyl cellulose) ingeye-cationic cellulose, ngakho-ke ukuhlangana ne-calcium empunga kuzoba i-slag ye-bean curd.

11. Lihlobene nani izinga lokushisa lejeli le-hydroxypropyl methylcellulose?

Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy. Ukuncipha kokuqukethwe kwe-methoxy, izinga lokushisa lejeli liphezulu.

Ishumi nambili, i-putty powder powder kanye ne-hydroxypropyl methyl cellulose ayinabo ubuhlobo?

Ibalulekile!! I-HPMC ayigcini kahle amanzi, izodala impushana.

13. Uyini umehluko phakathi kwesisombululo esisheshayo samanzi abandayo nesixazululo esishisayo se-hydroxypropyl methyl cellulose ohlelweni lokukhiqiza?

Uhlobo oluncibilikayo lwe-HPMC lwamanzi abandayo lungemva kokwelashwa kwe-glyoxal ebusweni, emanzini abandayo ahlakazeka ngokushesha, kepha angancibiliki ngempela, i-viscosity up, iyancibilika. Uhlobo oluncibilikayo lokushisa aluzange luphathwe nge-glyoxal. Umthamo we-glyoxal mkhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity ihamba kancane, ivolumu incane, ngokuphambene nalokho.

14, iphunga le-hydroxypropyl methyl cellulose liwukubuyisela kanjani umthwalo wemfanelo?

I-HPMC ekhiqizwa ngendlela yokuncibilikisa yenziwe nge-toluene ne-isopropyl alcohol njenge-solvent. Uma ukugeza kungalungile kakhulu, kuzoba khona ukunambitheka okusele. (Ukubuyiswa kokungathathi hlangothi kuyinqubo eyinhloko yephunga)

15, ukusetshenziswa okuhlukile, indlela yokukhetha i-hydroxypropyl methyl cellulose efanele?

I-Putty powder: izidingo zokugcina amanzi aphezulu, kalula ukwakha (ibanga elinconyiwe: 7010N)

Udaka olusekelwe kusimende olujwayelekile: ukugcinwa kwamanzi aphezulu, ukumelana nokushisa okuphezulu, i-viscosity esheshayo (ibanga elinconyiwe: HPK100M)

Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo, i-viscosity ephezulu. (Umkhiqizo onconyiwe: HPK200MS)

I-Gypsum mortar: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi nendawo, i-viscosity esheshayo (ibanga elinconyiwe: HPK600M)

16, i-hydroxypropyl methyl cellulose siyini isiteketiso?

I-HPMC noma i-MHPC i-alias hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.

Ishumi nesikhombisa, i-hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, i-putty powder bubble yisiphi isizathu?

I-HPMC ku-putty powder, idlala izindima ezintathu zokujiya, ukugcinwa kwamanzi nokwakha, isizathu sebhamuza:

1. Kwengezwa amanzi amaningi kakhulu.

2. Iphansi alomile, phezulu kolunye ungqimba lokukhuhla, futhi kulula ukubhubhudla.

Ishumi nesishiyagalombili, i-hydroxypropyl methyl cellulose kanye ne-MC uyini umehluko:

I-MC i-methylcellulose, eyenziwe ngokotini ocolisisiwe ngemva kokwelashwa kwe-alkali kanye ne-methane chloride njenge-ejenti ye-etherification ngochungechunge lokusabela ukwenza i-cellulose ether. Ngokuvamile, izinga lokushintsha lingu-1.6-2.0, futhi ukunyibilika kwamazinga ahlukene okushintsha nakho kuhlukile, okungokwe-non-ionic cellulose ether.

(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo lokungezwa, i-viscosity, ukucoleka kwezinhlayiyana kanye nesivinini sokuhlakazeka. Ngokuvamile, uma inani lokwengeza likhulu, ubuhle buncane futhi i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu. Inani lokwengeza linomthelela omkhulu kuzinga lokugcinwa kwamanzi, futhi i-viscosity ayihlobene nezinga lokugcinwa kwamanzi. Isivinini sokuncibilika sincike kakhulu kuzinga lokuguqulwa kwendawo yezinhlayiya ze-cellulose kanye nokucoleka kwezinhlayiyana. Ku-cellulose ether methyl cellulose engenhla kanye ne-hydroxypropyl methyl cellulose izinga lokugcinwa kwamanzi liphezulu.

(2) I-methyl cellulose ingancibilika emanzini abandayo, ukuncibilika kwamanzi ashisayo kuzohlangabezana nobunzima, isixazululo saso esinamanzi ebangeni le-pH = 3-12 izinzile kakhulu, futhi isitashi, nokuhambisana okuningi kwe-surfactant kuhle, lapho izinga lokushisa lifinyelela ukushisa kwe-gelation, i-gelation phenomenon izokwenzeka.

(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcinwa kwamanzi e-methyl cellulose, ngokuvamile lapho izinga lokushisa liphakeme, ukugcinwa kwamanzi kubi kakhulu. Uma izinga lokushisa lodaka lidlula ama-degree angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuyoba kubi kakhulu, kuthinte kakhulu ukwakhiwa kodaka.

(4) I-Methyl cellulose inethonya elisobala ekwakhiweni nasekubambeleleni kodaka. Lapha, ukunamathela kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi le-daub labasebenzi kanye ne-substrate yodonga, okungukuthi, ukumelana kwe-shear kodaka. Impahla yokunamathisela inkulu, ukumelana kwe-shear kodaka kukhulu, futhi amandla adingwa abasebenzi ngesikhathi sokusebenzisa nawo makhulu, ngakho-ke impahla yokwakha yedaka impofu.